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    <title>subf</title>
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    <center>Scilab Function</center>
    <div align="right">Last update : April 1993</div>
    <p>
      <b>subf</b> -   symbolic subtraction</p>
    <h3>
      <font color="blue">Calling Sequence</font>
    </h3>
    <dl>
      <dd>
        <tt>["c"]=subf("a","b")  </tt>
      </dd>
    </dl>
    <h3>
      <font color="blue">Parameters</font>
    </h3>
    <ul>
      <li>
        <tt>
          <b>"a","b","c"  </b>
        </tt>: strings</li>
    </ul>
    <h3>
      <font color="blue">Description</font>
    </h3>
    <p>
    returns the character string <tt>
        <b>c</b>
      </tt>=<tt>
        <b>"a-b"</b>
      </tt>
    Trivial simplifications such as <tt>
        <b>subf("0","a")</b>
      </tt> or
    <tt>
        <b>subf("1","2")</b>
      </tt> are performed.</p>
    <h3>
      <font color="blue">Examples</font>
    </h3>
    <pre>

subf('0','a')
subf('2','1')
subf('a','0')
 
  </pre>
    <h3>
      <font color="blue">See Also</font>
    </h3>
    <p>
      <a href="mulf.htm">
        <tt>
          <b>mulf</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="ldivf.htm">
        <tt>
          <b>ldivf</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="rdivf.htm">
        <tt>
          <b>rdivf</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="eval.htm">
        <tt>
          <b>eval</b>
        </tt>
      </a>,&nbsp;&nbsp;<a href="../programming/evstr.htm">
        <tt>
          <b>evstr</b>
        </tt>
      </a>,&nbsp;&nbsp;</p>
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